Teach Yourself Borland C++ in 14 Days - portal

Working with the Form Designer and the Menu Designer
Writing the Code
Okay, so we have all these menu items but no code to make them work. It’s going to be a lot
of work to implement all these menu items, right? Actually, it’s pretty easy. Most of the code
required is already part of the TMemo class. All we have to do is call the appropriate TMemo
methods in our menu handlers. We’ll have to do a few other things, but most of what we will
add is code you have seen before.
Before we write the code, we need to add the usual OpenDialog and SaveDialog components
to the form:
1. Place an OpenDialog component on the form.
2. Change the Name property to OpenDialog.
3. Place a SaveDialog component on the form.
4. Change the Name property to SaveDialog.
5. Line up the MainMenu, OpenDialog, and SaveDialog icons on the form.
That was easy enough. Now let’s get on with writing the code for the menu items. We’ll start
with the File Exit menu item (hey, it’s the easiest!). Be sure that the Menu Designer is closed
so you don’t confuse the Menu Designer with the Form Designer.
1. Choose File | Exit from the main menu. The Code Editor comes to the top, and
the FileExitClick() event handler is displayed.
2. The cursor is positioned and ready to go. Type the following at the cursor:
NOTE
Close();
In step 2 I had you use the Close() function to close the form. This
works fine here because this is the main form of the application. But if
you want to terminate the application from anywhere in the program
you should use this:
Application->Terminate();
This will ensure that the application is terminated regardless of which
form is currently open.
That’s it. I told you it was the easiest! Let’s do one more; then I’m going to turn you loose
to finish the rest on your own.
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